<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        姓：<input type="text" v-model="firstName"><br><br>
        名：<input type="text" v-model="lastName"><br><br>
        全名：<span>{{firstName}}--{{lastName}}</span>
    </div>


    <script type="text/javascript">
         Vue.config.productionTip = false;//阻止vue在启动的时候生成生产提示

         const a = new Vue({
            el:"#root",
            data:{
                firstName:"张",
                lastName:"三",
            }
         })

    </script>
</body>
</html>